Every part of your client project,
in one Room.
Ask and it answers with sources; ask for help and the AI prepares it. End the chasing, the digging, and the “I never agreed to that” before sign-off with one shared space per project: a Room.
Now in beta · No credit card. Try every Business feature for 14 days; afterwards you simply move to Free ($0), with no charge.See how it works →
Illustration (example).Try the real screens in the public demo Room (opens in a new tab)
WHAT IS A ROOM
The work you spread across tools, in one Room.
A Room is a shared space you use with your client, one per project. Create it and invite the client, and files, conversations, notes, to-dos, and decisions sit in one place.
| Work | Before | In a Room |
|---|---|---|
| Sharing files | Before: Google DriveEmail attachmentsFile transfer | In a Room: Drop them in the Room, and see whether the client opened them |
| Conversations | Before: EmailLINEMessengerChatworkSlack | In a Room: Room messages. Slack and LINE Official Accounts can sync with them |
| Meeting notes | Before: Google DocsNotionRecordings | In a Room: Room pages. Zoom transcripts land there automatically* |
| To-dos and requests | Before: ExcelSpreadsheetsReminder emails | In a Room: Room tasks, with owners and due dates |
| What was decided | Before: Digging through notesSomeone’s memory | In a Room: Decisions go on the decision timeline, with dates and original records |
* For meetings created from the Room with recording turned on (requires the Zoom integration and cloud recording). LINE sync requires a connected LINE Official Account.
Built by people who use it
Built and run by koromo, Inc., a product development and AI consulting studio. We run our own client projects with our clients in Terasu Rooms.
About koromo (opens in a new tab)Release history
New features and improvements are published in the changelog. Your requests go straight to the development team.
View the changelog →How we handle data
Traffic is encrypted and access is scoped per Room. Messages and requests to the client are always sent only after approval.
Security practices →What the AI can see
Ask in a Room and it answers from that Room’s records, with sources that link back to the originals.
How the AI works →THE PROBLEM
The files exist. The minutes exist. The decision context still disappears.
In long project cycles, progress stops less from missing information and more from not knowing where the important context lives.
Previous agreements become ambiguous
As meetings pile up, decisions and follow-ups blur together, and the next meeting starts with re-confirmation.
e.g. Nobody remembers which meeting decided "reports export to PDF only."
The client's homework quietly stalls
Assets, copy, confirmations, approvals — tasks waiting on the client stall unnoticed, and by the time you notice, the deadline has moved.
e.g. While you wait for the client’s data, only the reminder emails pile up.
Mismatched expectations erupt right before acceptance
"Nobody told us." "That's not what we meant." Rework and disputes eat margin and PM hours, and the internal explanations start over too.
e.g. No record of why the spec changed, so the acceptance meeting becomes a fact-finding meeting.
What happens after meetings
Nudges, status checks, he-said-she-said, and hunting for files — the PM hours that vanish on every project — Terasu gives them back by design.
Want to measure where your projects stand first?Client work health check (free, about 2 minutes) →
COLLECT
Stop digging for things.
Files, meeting notes, meetings, messages, and tasks gather in one Room per project. Your client reads files and talks with you in the same Room, so there is no digging through email or chat.
Conversations with the client stay on record
Your client reads files and sends messages in the same Room. You can also see whether they opened a file.
Meetings you create from the Room record themselves
Create a meeting from the Room to get a Zoom URL; with recording turned on, the transcript lands in the Room afterwards (requires the Zoom integration and cloud recording).
No extra data entry. Clients join in one screen
Slack and LINE Official Account conversations sync with the Room, and pasted notes turn into task candidates. Keep using Backlog and your other tools alongside. Clients join from the invite email in one screen.
Choose, page by page, what the client sees and what stays internal.Open the public demo Room (opens in a new tab)
RETRIEVE
Ask what you agreed last time, with sources.
Trace decisions over time from everything collected. Ask the AI and it answers with the original records. No more “I never agreed to that,” and no re-explaining at every handover.
Decisions line up over time
Decisions appear on the decision timeline with dates and original records (internal only).
Ask and get answers with sources
Ask “what did we decide last time?” or “what is still undecided before sign-off?” and it answers with the original notes and messages.
New owners catch up just by asking
No need to re-explain the history. Ask in a Room and it answers from that Room’s records, with sources.
AI features are available on Solo and above. The 14-day free trial includes every Business feature.
DELEGATE
Your sync prep is drafted by morning.
Stalled projects show up in one list, and agents draft your weekly report and reminders. Anything sent to the client goes out only after you approve it.
Spot stalled projects first
Rooms with no activity for 5 days and client messages you haven’t answered show up together under Needs attention.
Weekly reports at a set time
Set a schedule and it drafts a progress report every week from tasks, notes, and file views.
Nothing reaches the client without approval
Reminders and reports stop at drafts. Messages and requests to the client are sent after you review them.
AI features are available on Solo and above.Learn more about Agent Studio →
WHY TERASU
How is this different from email and repurposed Backlog or kintone?
No need to replace what you use today. Keep issue tracking in Backlog — Terasu takes over sharing with clients, the record, and the AI.
Email & repurposed tools
Terasu
Client activity
Email & repurposed tools
After sending, you're "waiting for a reply." Whether it was read or has stalled, nobody knows.
Terasu
Each file shows whether the client opened it, and stalled Rooms show up under Needs attention.
Separating what clients see
Email & repurposed tools
Fear of leaking internal memos leads to split tools and duplicate bookkeeping.
Terasu
One Room, two faces: client-facing pages and internal judgment material, separated by permissions.
Asking the AI
Email & repurposed tools
Generic AI answers from general knowledge and drifts from the project's reality.
Terasu
Ask in a Room and it answers from that Room’s primary sources, with citations. If it doesn’t know, it says so.
Burden on the client
Email & repurposed tools
Invite → account creation → training. Adoption can take months.
Terasu
Joining a Room is one screen from the invitation email. Shared file links open with no account.
On the Business plan, Room data also powers Project Health AI (5-axis scoring) and stakeholder maps.
Pricing
Pricing Plans
Try Solo or Business with a 14-day free trial, no credit card required. Prices exclude tax.
Solo
For solo professionals running client work with AI agents
- 10 rooms · 5GB storage
- Agent Studio (hand work to an AI that knows the project) · project AI
- Detailed view analytics · Slack
- Invite clients to Rooms (not billed seats)
- Stakeholder map · MCP (reach projects from AI tools such as Claude)
Business
Most popularFor teams running multiple client projects. Spot stalled projects first, in one list
About $20 per person (with 10 users)
- Everything in Solo, including Agent Studio and project AI
- Unlimited rooms · 50GB storage
- 3 workspaces · 30 members per room
- CRM integration (Salesforce, HubSpot)
- Analytics export · API access
Both buttons start the same trial with every Business feature. When it ends, choose Solo (if you have one member) or Business, or drop to Free.
There is also a Free plan ($0 · 2 members · 3 Rooms), with no AI.
Compare all plans →FAQ
Frequently asked questions
Does this burden our clients?
Joining a Room takes one screen from the invitation email — set a name and password, no email entry needed. Start with a single point of contact; the whole client team doesn’t have to join. Shared file links open with no account, with optional PIN, expiry, and view-only sharing.
Can we use it alongside Backlog or kintone?
It's designed for coexistence. Keep issue tracking and dev tasks where they are — Terasu takes over client-shared files, the decision record, requests, and the AI. No migration required.
How do you handle security and data?
Traffic is encrypted and access is scoped per Room. Messages and requests to the client are always sent only after approval. See the security page for details.View the security page →
What information does the AI reference?
When you ask in a Room, the AI answers from that Room’s pages, files, conversations, and tasks. External web access is off by default and used only if an admin turns it on. Answers include sources that link back to the originals.
Can I try it for free?
Try Solo or Business free for 14 days after sign-up, with no credit card; the trial includes every Business feature. When it ends, choose Solo or Business, or drop to the Free plan (2 members, 3 Rooms, no AI).
What happens to Rooms over the Free limit after the trial?
Your Rooms and data are not deleted. While you are over the Free limits (3 Rooms), you cannot create new Rooms, paid features such as AI stop working, and some actions such as adding files follow the Free limits. Choose Business to carry on as before (Solo is also available if you have one member and up to 10 Rooms).
How long does onboarding take?
No workflow change is required. Start by placing one active client project’s documents, notes, and questions into a Room — you can start the same day.
What happens to my data if I cancel?
We support data export according to your contract. Contact us about cancellation and data retrieval.
How is this different from the file-sharing tool we already use?
Instead of send-and-done, views, reactions, promises, and AI answer evidence accumulate in one Room. See the comparison section above.
Is our data used to train AI models?
No. We never use your content to train our own or third-party AI models, and our contracts with external AI providers do not permit training on it. When you ask in a Room, the AI answers from that Room’s records, with sources.
Terasu is in beta — is our data safe and will it carry over?
You can export your data at any time (CSV, JSON, PDF, and more). When Terasu reaches general availability, your data and plan are expected to carry over, and we will announce any significant changes in advance.
Have other questions? Contact us →
Terasu is the client work OS.
A shared workspace for the projects you run with clients.
Start with one client project Room
today
Collect files, notes, and meetings in a Room and ask the AI what the client owes you and what to do next. Messages and requests to the client need your approval, so you can try it safely.
No credit card. Try every Business feature for 14 days; afterwards you simply move to Free ($0), with no charge.
Want to gauge where you stand first?Client Work Health Check (free · about 2 min) →
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